G0309 HCPCS code: Removal of implantable interstitial glucose sensor with creation of subcutaneous pocket at different anatomic site and insertion of new 180 day implantable sensor, including system activation
G0309 is the HCPCS Level II code for removal of implantable interstitial glucose sensor with creation of subcutaneous pocket at different anatomic site and insertion of new 180 day implantable sensor, including system activation. CMS terminated G0309 on 2022-12-31; do not bill it for later dates of service. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case.
Code details
| Field | Value |
|---|---|
| Section | G codes — Procedures and professional services (temporary) |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 13 |
| BETOS category | T2D |
| Added | 2022-07-01 |
| Last action effective | 2023-01-01 |
| Terminated | 2022-12-31 |
What changed for G0309
- 2022-07-01: G0309 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code G0309?
G0309 is the HCPCS Level II code for removal of implantable interstitial glucose sensor with creation of subcutaneous pocket at different anatomic site and insertion of new 180 day implantable sensor, including system activation. Short descriptor: "Rem/inser glu sensor dif sit".
Does Medicare cover G0309?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
Related G03 codes
- G0300 — Direct skilled nursing services of a licensed practical nurse (lpn) in the home health or hospice setting, each 15 minutes
- G0302 — Pre-operative pulmonary surgery services for preparation for lvrs, complete course of services, to include a minimum of 16 days of services
- G0303 — Pre-operative pulmonary surgery services for preparation for lvrs, 10 to 15 days of services
- G0304 — Pre-operative pulmonary surgery services for preparation for lvrs, 1 to 9 days of services
- G0305 — Post-discharge pulmonary surgery services after lvrs, minimum of 6 days of services
- G0306 — Complete cbc, automated (hgb, hct, rbc, wbc, without platelet count) and automated wbc differential count
- G0307 — Complete (cbc), automated (hgb, hct, rbc, wbc; without platelet count)
- G0308 — Creation of subcutaneous pocket with insertion of 180 day implantable interstitial glucose sensor, including system activation and patient training
- G0310 — Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service, 5 to 15 mins time (this code is used for medicaid billing purposes)
- G0311 — Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service, 16-30 mins time (this code is used for medicaid billing purposes)
- G0312 — Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service for ages under 21, 5 to 15 mins time (this code is used for medicaid billing purposes)
- G0313 — Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service for ages under 21, 16-30 mins time (this code is used for medicaid billing purposes)
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Next steps
- Run a reimbursement report for a device billed under G0309
- Watch G0309 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for G0309
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.